| 摘要 |
PURPOSE:To restrain non-uniformity of distribution of flow rates due to an adverse effect of a change in density of gas caused by electrochemical reaction in a pressurized type melted carbonate fuel cell. CONSTITUTION:Fuel gas 100 is supplied to an inlet manifold 10 of a battery, where a plurality of unit cells each comprising electrodes 2, 3, an electrolytic plate 1 and a separator 4 are superimposed on each other, from a lover header 6a of the laminated cells. Exhaust gas 101 after reaction is exhausted from an outlet manifold 12 through another lower header 6b. Gas flowing directions in both the manifolds are contrary to each other. Contrary to flowing of the fuel gas, oxidant gas is supplied from an upper header 6c, and is exhausted from another upper header 6d. Combination of a momentum effect of branch flow and convergent flow of the gases inside the manifolds and circulating force caused by a difference in density between the inlet and outlet manifolds can achieve uniform distribution of flow rates in the cells, thus enhancing performance of the battery. |
